update sitemap.xml, 2011/fredriksson and 2012/kang index.html files

2011/fredriksson/index.html

@@ -546,7 +546,7 @@ threshold, and search for “<code>ioccc</code>”, with option <code>-vk5</code
 <h3 id="limitations-and-remarks">Limitations and remarks</h3>
 <ul>
 <li><p>Using warning options (such as <code>-Wall</code>) when building gives a lot of warning,
-such as “<code>suggest parentheses around '&amp;&amp;' within '||'</code>”, “<code>value computed is   not used</code>”, “<code>implicit declaration of function 'putchar'</code>”, “<code>implicit   declaration of function 'getchar'</code>”, “<code>control reaches end of non-void   function</code>” and “<code>format not a string literal and no format arguments</code>”.
+such as “<code>suggest parentheses around '&amp;&amp;' within '||'</code>”, “<code>value computed is not used</code>”, “<code>implicit declaration of function 'putchar'</code>”, “<code>implicit declaration of function 'getchar'</code>”, “<code>control reaches end of non-void function</code>” and “<code>format not a string literal and no format arguments</code>”.
 Please ignore them all, since they just try to tell you that the source
 is obfuscated.</p></li>
 <li><p>Only standard input is handled. And <em>only</em> if <code>stdin</code> comes from a file,